Jack.



J. W. TUCKER.

JACK.

APPLICATION FILED JAN. 25. 1915.

1,157,461. Patented Oct. 19, 1915.

cuLunIm PMNOGRAPM co.. WASHINGTON. D c

1" 1 Wire ewes JAMEsw. TUCKER, or ARGENTA, ARKANSAS;

i JACK.

'Toall'whom it may concern:

Be it known that I, JAMEs W. TtroKnR,

a citizen of the United States, residingat Argenta, in the county "of Pulaski and: State of Arkansas, have invented-certain new and useful Improvements in Jacks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilledin the art to which it appertainsto make and use the same] My invention relates to improvements in jacks and has for its primary object to pro vide a simple and effective jack that is particularlydesigned for'railroad work for the purpose. of separating. journal boxes from their axles so that the brasses may be removed and replaced.

Another object of my invention is to 'pro-' vide a jack whichcomprisesia pair of adjustijust'ing screws arrangedito move cor-respond ingly' and-provided. with simple, easilysop erable and effective adjusting imeans',' also bearing members 'tOJ'enga'ge theiobjects to be separated ormoved relative'fto one an other.

Another object is to provide simple and effective means for engaging thelwheels of the car in such manner that the jack ma be operated without liability ofiitsislipping relative to the wheel. zzAnoih'eriobject is ,to' generally: improve and simplify jacksxofthez'character described so asfltosrenderthenpmore practical, and simple as to construetmnwlthout lncreas ng the cost of manufacture thereof..-

The above and additionalobjectsare ac- V complished by such meansiasa iile illustrated sponding parts, Figure 1 is a side elevation of my improved jack, Fig. 2 is a top plan View and Fig. 3 is a sectional view showing it mounted on a car wheel and ready for operation.

"Referring to the drawings by characters of reference, 1 and 2, designate upper and lower adjusting screws that are oppositely Specification of Letters Fatent. Application filed January 25, 1915. Serial 110 4379.

- Patented Oct. 19, 1915-.

threaded and'supported by a rotatable frame 3, said frameg beingof skeleton construction. Carried on the'outer end of the upper adjusting screw 1 is an objec t engaging plate i that is secured centrally to said screw 1 and disposed in a horizontal plane for engagement' with one of the objects to be moved or lifted. i

Secured-upon the lower or outer end of the lower adjusting screw is a segmental or arcuate wheel tread engaging plate 5. This plate 5 is secured centrally of its ends to said screw 2 and is designed for engagement with a car wheel or other object to be moved or which is to act as a support forthe jack.

Secured upon the upper face of the plate 5 at the ends thereof are flange engaging hooks 6. Eachrof'these hooks comprises a relatively flat and straight shank portion ,7 that is provided at its freeend with right angularly directed flanges 8 which are disposed in opposite directions and arranged to engage the inner faces of the flanges of car wheels. At one end of the shank 7 is formed a barrel 9 to receive a pivot or hinge pin 10. u-shaped brackets 11 are secured to the ends of the plate 5 on the upper face thereof and support the pin 10 and hooks 6 in such manner that the hooks 6 may be swung from one side ofthe-plate to the other.' The hooks 6 are preferably formed of resilient material and of a single piece thereof and are provided by doubling the single piece to form the shank 7' and then direct the ends of the d'ouble'portion out-' wardly to provide theflanges 8.' The frame 3 consists of a-rectangular body portion 12 which has alined openings in its ends to re- (261W? the screws 1 and 2. Extending from "the-ends of the rectangular body portion 12 are reduced frame. extensions 13 which have apertures extending. therethrough alining with the apertures in the ends of the frame portion 12 to receive the screws 1 and 2. The frame is to be rotated to effect the adjustment of the screws 1 and 2. Anoperating handle 1% is inserted transversely through the sides of the body portion 12 of the frame 3 and projects from said sides so that it may be readily grasped to effect rotation of the frame.

In use when it is desired to lift a journal 7 box from the axle inorder to have access-to inner face of: the flange of the wheel as shown in Fig. 3. By rotating the handle 6,

the brass in the box, the plate 5 is placed uponrthe tread portion of a car wheelland the hooks 6 arranged so as to engage the a the frame is caused to rotate and move the uponadjust-ment of'thescrews the journal boxwill be lifted from bearing engagement 'vvi th thejaxle. In having thehooks movable from one side of the plate 5 to the other, the a device is adapted foruse inconnection with the wheels on either sideo-f a car and when the hooks are in positionjrelative movement of the jack to the wheels is cbviated.

: While I-have shown my jack used in connection with the repair :of journal boxes-it lsjto' be understood that it may be used'for variousother' purposes for supporting objects,'etc.'

;\Vith reference to the foregoing description and accompanying drawings it willbe.

observedthat I have provided an extremely light and quickly operable expansionjack which may be used to great advantage in railroad work for spacing objectsrelative-to eachother or for lifting purposes, f In practice, I have found thattheform of my invention, illustrated; in the drawin'gsand referred to in the aboved'esc'ripti on,

as the preferred emb0diment,-is the most efficient and practical; yet realizing that the conditions concurrent with the adoption of my device will necessarily vary, I desire to emphasize the fact that various minor changes in details of construction, proportion and arrangement ofparts may be resorted to, when requlred, without sacrlficmgany of the advantages of my invention, as

V claimed.

What is claimed is: 7 flA jack of the class described comprising an adjusting screw and a Wheel tread a engaging plate having a segmental or concaved face to fit the tread of a Wheel, means carried: by the plate forengaging the "wheel Copies of this patent may be obtained for five" cents each, by addressing tIie Qominissioner of Patents. i s Z to retain the said plateon the tread rand adj usting meanscoiperating with the screw.

2; A jack comprising an adj usting'screw,

and a segmental Wheel tread engaging plate,

on said screw, piv'oted -hcoks for engagement. v vith the flange 'of'the wheelcarried on said "plate to adjust said screw.

3. A jack comprisingia rOtatabIeframe,

oppositelythreaded adjusting screws movfably carriedgiby-the frame, an object engag- I v V a the screws, vanarcuate car wheeltrea'd en gaging plate carried on the outerend of the other of the screwsiand pivoted flange ening plate carried on the outer end of one of gaging hooks carried bysaid plate. 1 a 4. A ack cornnrislng a rotatable frame,

the screws, an larcuate car wheel tread engaging plate carried on the outer'end ofth'e' other of the screws, pivoted flange. engaging hooks carried by said rotate saidlframe.

' A' jack comprising-a. skeleton-frame, adjusting screws 'carriedbv the frame, said frame to be rotated to "eflect adiustm'entiof the screws, said screws arrangedto move outwardly from the fraine in theaopposite directiom'an object engaging member carried uponthe outerend of' one of the screws; a

wheel engaging plate carried upon the; other the screws a'nd flangeengagingmembers carrled upon said plate,

plate, and means to a 6 5 oppositelvthreadedadjusting screws movc ably carried by thef-rame; an obiect'engaging platecarried on the outer end of one of 6. A jack comprisinga "rotatableframe, 7

upper and lower screws oppositely threaded into the frame and a wheel engaging plate-Q connected with theflower screw and having a concaved face :to'fitthe .t ead'of a wheel, said plate being also providedwith means ,7

wheel to retain it on the for engaging a tread.

in presence of .two witnesses; f

In testimony whereof I l affix my signature I Witnesses: g I

GEO. S."'SCOTT,'1 j C. THOMAS.

' Washington, D. G. f 

